Distillation of alcohol limit is around 90% or a bit more. Beyond that, you have to use a dehydrator EG calcium chloride.
Regarding the post above why did you use cold alcohol and why would it be a problem if the alcohol gets warm while filtering -- considering that you then proceed to evap the alcohol off using heat? I am looking to do this, I just bought 20L of 96% ethanol.
All about Chemistry & I’m not a chemist, I just read a lot & found something that works easily for me…!
Glad to see you had some success.
((comment. If you did the above process at “”room temperature””,
Your yield would be about 6 1/2 to 7 1/2 g of oil per Oz. 30–35% more…
Why? You are picking up everything out of the plant cannabinoid oil’s, fats, waxes, chlorophyll, and other undesirables, which in all reality is just fine if you only plan on using it for edibles or gelatin capsules, but it clogs up Vape carts very easy & reduces potency.))
Hash or Clean Kief
Hash (Keif) Yields about 68-70% oil, no wax/fat/biomass pickup if done at
very low sub zero (I prefer -50/-60f using dry-ice in food cooler method)… I will use it now and then, ice water Kief the best flavor.
HASH OIL :
Great Article:
June 28, 2017
CANNABIS OIL QWET EXTRACTION BATTLE OF THE WASH: DRY ICE VS. FREEZER
Good article:
How to Find the Best Cannabis Extraction Solvents
by Anna Wilcox
July 19, 2020
……..Conclusion…….
A difference in fat melting temperature points is the reason ethanol super cold extraction works, why ? cannabinoid oil’s versus regular (non-cannabinoid) plant fats have a different extraction dissolving rate
at the same temperatures. You might say that the fats and waxes are slowed to a extraction crawl !
Cannabinoid oil will dissolve at -40, but at -60, -70, etc it’s extraction time increases.
Non-cannabinoid Plant fats on the other hand
will dissolve at 70°, 0° -40°, but will take longer to dissolve (extract) at colder Temperatures.
They will dissolve at a much slower pace at -40 than cannabinoid oils.)))
(So, however, herein lies the flexibility of ethanol making it extremely suitable for extracting botanical compounds:
the “polarity of ethanol”can be slightly modulated / adjusted simply by changing temperature.
The colder the ethanol, the higher its “affinity” for fat soluble compounds, and therefore a more efficient extraction of “cannabinoids and terpenes”.
And if extraction is performed with warm or room temperature ethanol however, will not only grab the cannabinoids, but also a wider spectrum of terpenes as well as “water” soluble compounds -undesirables, fats, waxes, other lipids & chlorophyll.)
I guess basically you’re just freezing everything out you don’t want, In the most simplest terms!
Why not more articles.
Quote-“Ethanol continues to be the solvent of choice for high-throughput cannabis processors aiming to extract hundreds to thousands of pounds of cannabis and hemp biomass daily.”
Article:
Cannabis science and technology:
The Evolution of Ethanol Extraction Methods in Cannabis
April 16, 2021
By
Lo Friesen
